82543 has 4 divisors (see below), whose sum is σ = 83160. Its totient is φ = 81928.

The previous prime is 82531. The next prime is 82549. The reversal of 82543 is 34528.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 82543 - 2⁹ = 82031 is a prime.

It is a Duffinian number.

82543 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13 + ... + 406.

It is an arithmetic number, because the mean of its divisors is an integer number (20790).

2⁸²⁵⁴³ is an apocalyptic number.

82543 is a deficient number, since it is larger than the sum of its proper divisors (617).

82543 is a wasteful number, since it uses less digits than its factorization.

82543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616.

The product of its digits is 960, while the sum is 22.

The square root of 82543 is about 287.3029759679. The cubic root of 82543 is about 43.5405004406.

It can be divided in two parts, 825 and 43, that added together give a palindrome (868).

The spelling of 82543 in words is "eighty-two thousand, five hundred forty-three".